I just needed to say "THANK YOU LYEN" this is a real nice controller. Great service fast and friendly. What more can I say.

I needed to post an update. WOW, I hit 150 amps today on this controller. Well it hit me I should say. This thing is unreal I'm running some no name 12" scooter hub motor. Running 20s2p lipo and I hit the 3 speed switch at the wrong time at wot from 2 to 3 at 35 mph. I am glad I had riding wear on because I just went up and over on to my a.. so yea if you need a controller for your build this is it!!

I've now heard back from Edward Lyen and received a controller back (not tested yet though)- he got in touch around 3 weeks ago, he waited nearly 2 weeks for me to send the money and sent a controller straight out which I got 6 days later.

hi i want to get one of this. I have a crystalyte 72v 50A controller and i am running a 5403 crystalyte motor in my stealth bomber. Something went wrong with my controller. Will this work in my set up i am running a 88v 21s 3p turnigy lipo

I have 2 Lyen controllers and having one of them sensorless would be good. Better yet if it was a switchable option but I guess that would be impracticable for Mk 1 and Mk 2 boards. Are there any 18 FET programmable controllers with both sensor and sensorless operation? Or 15 FET, or 12 FET (at a push)?

Hello EdDo you have any of the controller testers for sale by themselves. I thought I was the greatest, but apparently I'm not and can't get a decent Hall/ Phase combo. Anyways, if you have any please, please give me price and shipping. ThanksotherDoc

Agniusm/A123 AMP 20 36 volts on the Steini has been taken off.2x16000 Multisport from HK now gone as they died after 2 yearsNew Luna 10S bottle battery 13.6AH now on mineRelatively New 10S4Px2 for wife's bike giving 20ah @ 40 volts home made Panasonic from Tumich. BMS's rule.

I'm thinking about upgrading from 18s to 22s, with keeping the block time set to the default 10 seconds, which means lots of phase amps. Do you think I will run into any problems of blowing up the controller at 22s?

It has worked flawlessly at 18s, has much more low end torque than my Max-E because the max-e limits the phase amps unless you unlock.